TY  - BOOK
AU  - Ravitch, Sharon M., J.T.
AU  - Riggan, Matthew
TI  - Reason & rigor: how conceptual frameworks guide research
SN  - 9781412981255
U1  -  001.42 RAV-R 
PY  - 2012///
CY  - Los Angles,USA
PB  - Sage
ER  -